Automobile theft alarm



-Feb. 17, 1931. J. BARBECK AUTOMOBILE THEFT ALARM Filed July 20. 1929Patented Feb. 17, 1931 UNITED STATES PAT JOSEPH BARBECIK, OF CLEVELAND,OHIO AUTOMOBILE TI-IEFT ALARM Application filed July 20,`

My invention pertains to an automobile theft alarm and more particularlyto an appliance mainly hidden from ordinary observation and adapted tosound the alarm during any unauthorized driving of the vehicle.

One object of my invention is to provide an appliance which isapplicable to any make of car, which is readily attached as an accessorywithout interference with any other standard operating part of thevehicle, which is ade structions. The showing of the drawing andv theparticular description are merely specific eXemplifications ofa'plurality of mechani-V cal embodiments and arrangements.

Adverting to the drawing: Figure 1 is a side elevation of an automobile,

a middle portion being shown as a fragmen-V tary section to disclose oneexemplifying location of an appliance embodying the principles of myinvention.

Figure 2 is an enlarged vertical section onV ingu ,A'lower complementarydivision 22 of line 2 2 of Figure 1.

Figure 3 is a plan section on line 3-3 of;

Figure 2 showing in full and dotted lines the functionating and inutilepositions respec-` tively of one cooperating displaceable element.

An automobile 1 includes in its driving mechanism the conventionalpropeller shaft 2 located below the floor 3 of the vehicle. The

forward foot board of the floor 3 is providedjust ahead of the frontseat with an opening 4 in which is mounted a hollow casing 5 of anystandard lock mechanism. An annular flange 6, carried by the casing 5,is secured to the top of the flooring by means of screws 7.

Fitted in the casing 5 is a plunger 8 adapted;

to be turned by use of the proper key 9. It

should be understood that a combination lockY may be substituted for thekey control if desired.

mounted a double arm rock lever. Its one 1929. serial No. 379,687.

arm 11, when `in its functionating position, as shown in Figure 2 and inAfull lines in Figure 3, projects toward the propeller shaft 2. Itsother arm 12, `as shown in Figure 2, projects in an opposite directionand has attached to it in any appropriate manner a resilient extension13 which carries -onits eX- tremity a weight or hammer 14. A spring 15connects'the'arm 11 with an ear formed on the near side of the plunger-8and serves to exert an upward Apull/for a purpose to be hereinafterexplained.

' Attached in a depending vposition to the underside of the flooring 3,by means of bolts 16,is a bracket 17 the'lower endof which suitablycarries a bell 18 in a position to" be vstruck by the hammer 14 though'normally f out of contact therewith.

It-i's preferable, not only as a protection against interference withmyalarm mechamsm, but also to protect it against dust, to

provide a housing for theoperating. mech-v anism of my invention. Ihavedisclosed a composite housing of quadrilateral form including an upwarddivision 19 outwardly flanged around its top at 20 and confining agasket 21 against the lower side of the floorthe housing likewlse hasits upper end outwardly flanged at 23 and such flange is opl posed toanother flange 24 around the lower end of the upper. division 19.yBetween the flanges 23 and 24 is interposed a sealingV gasket25. Thetwo divisions 19 and22 of the housing are secured to each other'andfirmly suspended from the flooring byy a series of four bolts 26 havingtheir heads 27 abutting thelower side of the flange 23 and provided inappropriate coun-tersinks formed in the upper surface ofthe floor withnuts 28. A shaft 2 is enveloped by twocoacting members 29 and 30eachzprovided withdiametricallyl opposite flanges through which arepassedV bolts 31 adapted to effect a clamping actionof the members 29and 30 upon the shaft so that they will rotate therewith in thedirection indicated by the arrow in Figure 2.

One of the flanges, asv illustrated one ofthe two. formed on themember30, is lengthened somewhat et s2 t@ @Verhees the flange the member 29which is opposed to it. The member 30 is clamped to the shaft 2 withinthe composite housing and in such a position that its extension 32 isadapted during its orbital movement to impinge against the free end ofthe arm 11 and so as intermittently (one for each rotation of the shaft2) to depress the arm 11 against the action of the spring 15 when theparts are in the position shown in Figure 2 and in full line in Figure3. Presently, the extension 32 will slip past the extremity of the arm11 to release it whereupon the spring 15 suddenly pulls it up against astop 33 and such action causes the hammer 14 to tap. the bell 18. Aswill be readily understood, the bell 18 will be sounded with eachrevolutionof the shaft. A covering plate 34 may be attached to the floorto hinder unauthorized access to the screws 7 and nuts 28.

When the owner of the automobile is himself to drive the ca r he willinsert his key 9 and turn the plunger 8 through an angle of 90 to theposition in which it appears in dotted lines in Figure 3, therebysimultaneously displacing the free extremity of the arm 11 beyond thepath of orbital movement of the extension 32 and likewise removing thehammer 14 from proximity to the bell 18.

1. In an automobile theft alarm, the combination of a propeller shaft, aprojection carried by said shaft, a bell, a resilient hammer pivotallyarranged to strike said bell and to be actuated by said projection andlock mechanism for turning the pivot of said hammer to shift it beyondthe orbital path of movement of said projection.

2. In an automobile theft alarm, the combination of a propeller shaft, aprojection carried by said shaft, a bell, a lock-controlled turnablemember having a transverse extension, a rock lever pivotally mounted onsaid extension, said lever being adapted to strike said bell and to beactuated by said projection.

3. In an appliance of the character described, the combination of arotary driving member, a box enclosing a section of said member, a bellin said box, and a double armed lever pivotally mounted in said box, acomposite clamp on said shafthincluding a projection adapted to impingeagainst one arm of said lever to shove it through a predetermined arc atevery rotation of said shaft, the other arm being adapted to strike saidbell.

1. In an appliance of the character described, the combination of avehicle fixture, a box attached to said fixture and enclosing a sectionof said shaft, a lock-controlled member turnably mounted in said fixtureand projecting into said box, a bell in said box, a lever movablymounted on said member, said shaft carrying a projection adapt- Signedby me, this 9th day of July, 1929. 'i

JOSEPH BARBECK.

